centru.sk

Valid Email Server
Domain Lookup › centru.sk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
centru.sk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 07:57:03 UTC · ↺ Refresh

MX Hostnames

  • dx.spamfree.cz
  • ax.virusfree.cz
  • cx.spamfree.cz
  • bx.virusfree.cz

MX Priorities

  • bx.virusfree.cz: 20
  • cx.spamfree.cz: 30
  • dx.spamfree.cz: 40
  • ax.virusfree.cz: 10

A / AAAA Records

  • 172.67.158.12 (no PTR)
  • 104.21.49.18 (no PTR)
  • 2606:4700:3031::ac43:9e0c (no PTR)
  • 2606:4700:3035::6815:3112 (no PTR)

Mail Server IPs

  • 89.187.156.46 ↩ bq.virusfree.cz
  • 2001:67c:15a2::b1 ↩ bx.virusfree.cz
  • 195.24.76.170 ↩ dq.spamfree.cz
  • 2001:67c:15a3::d1 ↩ dx.spamfree.cz
  • 31.7.241.24 ↩ ax.virusfree.cz
  • 2001:67c:15a1::a1 ↩ ax.virusfree.cz

SOA Record

Raw SOA marissa.ns.cloudflare.com dns.cloudflare.com 2395253093 10000 2400 604800 1800
Primary NS (mname)
marissa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395253093
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

marissa.ns.cloudflare.com
sid.ns.cloudflare.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

No TXT records found.

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